didn't have the time to fully dive into this topic, and I'm currently not active as I can't invest enough time to be a reliable player... yet this is something I'd appreciate to happen.
I started on webdip around 2011 and played there for some years (HalberMensch is the account over there) ... then discovered vdip and was attracted by the variants - to find out many are excellent and worthy to be in a spotlight, some are fun to explore, and many are failed or abandoned without taking off ...
I always considered vdip to be more fun and vital, and webdip more serious, for those with more committment (maybe I'm wrong about this though, it's just my impression and does not do justice to the excellent regular players over here on vdip).
but by now i'm quite afraid vdip is going to die - there were times when admins had no acces to a crashed platform to repair, and it took weeks to get it up and running again, with some games lost. it's just difficult to invest a lot of time an a platform that could blow up any time.
so i'd be very pleased of some of the more innovative stuff of vdip could he found on webdip, including a whole lot of proven and maintained variants - in my opinion many are good enough to be worthy of a more official platform. it has also more potential to move forward there, if Oli is not coming back with full focus anytime ... currently proposals seem to land in the "good idea but we can't do it without Oli" drawer, which is sad.
as for merging the ladder - I honestly don't care currently. I'd even join a merged platform if I was reset to 1000 base points.
In the spirit of contribution and open source spirit: if there is any need ever for someone with frontend experience (templating, html, CSS, JS, graphics design, but especially organizing information and functionality in an easy to get and use way), I'd be open to contribute. this is not at all about changing the look and feel of the site - it's old school but efficient. But I think webdip/vdip has grown the last years with more and more features implemented here and there, with a technical perspective first, and the organisation of information has suffered by this. I tried to propose (here, over at webdip, and in a non-existing phpbb forum for webdip Devs?) some rework of the interface back in 2016 to show some things that could be improved by reorganisation to make the game more friendly for beginners, but it didn't take off then. this stuff is still somewhere and could be re-evaluated (with 7 years more experience as UI/UX designer) if there is any interest.